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      <a href="/2017/05/28/angular2-free-1-init-angular-app-with-webpack/" title="玩转Angular2(1)--用Webpack启动Angular2应用" itemprop="url">玩转Angular2(1)--用Webpack启动Angular2应用</a>
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      <a href="https://godbasin.github.io" title="被删">被删</a>
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    <time datetime="2017-05-28T14:12:26.000Z" itemprop="datePublished">2017-05-28</time>
    更新日期:<time datetime="2018-12-18T15:31:30.819Z" itemprop="dateModified">2018-12-18</time>
    
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			<strong class="toc-title">文章目录</strong>
		<ol class="toc"><li class="toc-item toc-level-2"><a class="toc-link" href="#基本依赖"><span class="toc-number">1.</span> <span class="toc-text">基本依赖</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#package-json"><span class="toc-number">1.1.</span> <span class="toc-text">package.json</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#webpack配置"><span class="toc-number">2.</span> <span class="toc-text">webpack配置</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#webpack-config-js"><span class="toc-number">2.1.</span> <span class="toc-text">webpack.config.js</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#webpackServer-config-js"><span class="toc-number">2.2.</span> <span class="toc-text">webpackServer.config.js</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#其他配置"><span class="toc-number">3.</span> <span class="toc-text">其他配置</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#babelrc"><span class="toc-number">3.1.</span> <span class="toc-text">.babelrc</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#tsconfig-json"><span class="toc-number">3.2.</span> <span class="toc-text">tsconfig.json</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#启动应用"><span class="toc-number">4.</span> <span class="toc-text">启动应用</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#项目代码"><span class="toc-number">4.1.</span> <span class="toc-text">项目代码</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#结束语"><span class="toc-number">5.</span> <span class="toc-text">结束语</span></a></li></ol>
		</div>
		
		<p>因为项目原因又玩上了Angular2(v4.0+)，《玩转Angular2》系列用于探索一些灵活或者新的用法。<br>本文记录用webpack配置环境，启动app的过程。<br><a id="more"></a></p>
<h2 id="基本依赖"><a href="#基本依赖" class="headerlink" title="基本依赖"></a>基本依赖</h2><hr>
<p>其实angular2快速启动的脚手架也不少，官方的<a href="https://github.com/angular/angular-cli" target="_blank" rel="external">angular-cli</a>，<a href="https://github.com/AngularClass/angular2-webpack-starter" target="_blank" rel="external">Angular2 Webpack Starter</a>等等。</p>
<p>这里选择自己搭建的原因，大概是脚手架什么的生成最后的项目总有一些不需要的，还有像单元测试和e2e等等基本不会用到的。</p>
<p>本骚年更偏向的是，一点一点地搭建起来，缺了就慢慢补，这样里面的每个东西都是自己很清楚的。</p>
<h3 id="package-json"><a href="#package-json" class="headerlink" title="package.json"></a>package.json</h3><p>首先，当然要介绍下我们的一些基本依赖，一般都会选择从package.json开始。</p>
<figure class="highlight json"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div></pre></td><td class="code"><pre><div class="line">&#123;</div><div class="line">  <span class="attr">"name"</span>: <span class="string">"angular-free"</span>,</div><div class="line">  <span class="attr">"version"</span>: <span class="string">"0.0.0"</span>,</div><div class="line">  <span class="attr">"scripts"</span>: &#123;</div><div class="line">    <span class="attr">"build"</span>: <span class="string">"webpack --config webpack.config.js"</span>,</div><div class="line">    <span class="attr">"dev"</span>: <span class="string">"webpack-dev-server --config webpackServer.config.js --host 0.0.0.0 --port 3333 --devtool eval --progress --colors --hot --content-base dist"</span></div><div class="line">  &#125;,</div><div class="line">  <span class="attr">"dependencies"</span>: &#123;</div><div class="line">    <span class="attr">"@angular/common"</span>: <span class="string">"^4.0.0"</span>,</div><div class="line">    <span class="attr">"@angular/compiler"</span>: <span class="string">"^4.0.0"</span>,</div><div class="line">    <span class="attr">"@angular/compiler-cli"</span>: <span class="string">"^4.0.0"</span>,</div><div class="line">    <span class="attr">"@angular/core"</span>: <span class="string">"^4.0.0"</span>,</div><div class="line">    <span class="attr">"@angular/forms"</span>: <span class="string">"^4.0.0"</span>,</div><div class="line">    <span class="attr">"@angular/http"</span>: <span class="string">"^4.0.0"</span>,</div><div class="line">    <span class="attr">"@angular/platform-browser"</span>: <span class="string">"^4.0.0"</span>,</div><div class="line">    <span class="attr">"@angular/platform-browser-dynamic"</span>: <span class="string">"^4.0.0"</span>,</div><div class="line">    <span class="attr">"@angular/router"</span>: <span class="string">"^4.0.0"</span>,</div><div class="line">    <span class="attr">"rxjs"</span>: <span class="string">"^5.1.0"</span>,</div><div class="line">    <span class="attr">"zone.js"</span>: <span class="string">"^0.8.10"</span></div><div class="line">  &#125;,</div><div class="line">  <span class="attr">"devDependencies"</span>: &#123;</div><div class="line">    <span class="attr">"@types/node"</span>: <span class="string">"^7.0.18"</span>,</div><div class="line">    <span class="attr">"babel-core"</span>: <span class="string">"^6.24.1"</span>,</div><div class="line">    <span class="attr">"babel-loader"</span>: <span class="string">"^7.0.0"</span>,</div><div class="line">    <span class="attr">"babel-polyfill"</span>: <span class="string">"^6.23.0"</span>,</div><div class="line">    <span class="attr">"babel-preset-latest"</span>: <span class="string">"^6.24.1"</span>,</div><div class="line">    <span class="attr">"file-loader"</span>: <span class="string">"^0.11.1"</span>,</div><div class="line">    <span class="attr">"html-webpack-plugin"</span>: <span class="string">"^2.28.0"</span>,</div><div class="line">    <span class="attr">"ts-loader"</span>: <span class="string">"^2.0.3"</span>,</div><div class="line">    <span class="attr">"tslint"</span>: <span class="string">"^5.2.0"</span>,</div><div class="line">    <span class="attr">"typescript"</span>: <span class="string">"~2.2.0"</span>,</div><div class="line">    <span class="attr">"webpack"</span>: <span class="string">"^2.5.1"</span>,</div><div class="line">    <span class="attr">"webpack-dev-server"</span>: <span class="string">"^2.4.5"</span></div><div class="line">  &#125;</div><div class="line">&#125;</div></pre></td></tr></table></figure>
<p>这里可以大概看到，除了基本的angularv4.0+（这里本骚年安装的是v4.1.2版本），我们还用到了其他的一些工具或者库，像：</p>
<ul>
<li>webpack</li>
<li>babel</li>
<li>typescript</li>
<li>…</li>
</ul>
<p>本节我们主要涉及的是webpack。<br>webpack依赖安装，除了<code>npm install</code>外，还需要全局安装<code>npm install -g webpack</code>。</p>
<p>webpack本骚年使用的是v2.0+版本，而1迁2其实也不是什么难事情，官方有个很详细的<a href="https://webpack.js.org/guides/migrating/" target="_blank" rel="external">migration说明</a>，大家可以参考看看。</p>
<ul>
<li><code>script</code>命令</li>
</ul>
<p>至于scripts命令，这里有两个：</p>
<ol>
<li><code>npm run dev</code>：启动webpack服务。</li>
<li><code>npm run build</code>: 构建生成dist目录。</li>
</ol>
<h2 id="webpack配置"><a href="#webpack配置" class="headerlink" title="webpack配置"></a>webpack配置</h2><hr>
<h3 id="webpack-config-js"><a href="#webpack-config-js" class="headerlink" title="webpack.config.js"></a>webpack.config.js</h3><p>这里简单介绍一下几个使用到的loader。</p>
<ul>
<li>babel-loader：将ES6甚至ES7编译成ES5</li>
<li>css/style-loader：基本的样式文件编译打包</li>
<li>ts-loader：将ts编译成js。</li>
<li>file-loader：这里主要是方便angular组件声明<code>templateUrl</code>等一些文件路径的时候比较方便。</li>
</ul>
<p>关于插件plugins，这里主要用了一个<code>html-webpack-plugin</code>，用于插入<code>index.html</code>页面。</p>
<p>上码：</p>
<figure class="highlight javascript"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div><div class="line">27</div><div class="line">28</div><div class="line">29</div><div class="line">30</div><div class="line">31</div><div class="line">32</div><div class="line">33</div><div class="line">34</div><div class="line">35</div><div class="line">36</div><div class="line">37</div><div class="line">38</div><div class="line">39</div><div class="line">40</div></pre></td><td class="code"><pre><div class="line"><span class="keyword">var</span> webpack = <span class="built_in">require</span>(<span class="string">'webpack'</span>);</div><div class="line"><span class="keyword">var</span> path = <span class="built_in">require</span>(<span class="string">'path'</span>);</div><div class="line"><span class="keyword">var</span> HtmlwebpackPlugin = <span class="built_in">require</span>(<span class="string">'html-webpack-plugin'</span>);</div><div class="line"></div><div class="line"><span class="keyword">var</span> config = &#123;</div><div class="line">    <span class="comment">// 入口</span></div><div class="line">    entry:  [<span class="string">'babel-polyfill'</span>, <span class="string">'./src/bootstrap.ts'</span>],</div><div class="line">    <span class="comment">// 生成的文件</span></div><div class="line">    output: &#123;</div><div class="line">        <span class="attr">path</span>: path.resolve(__dirname, <span class="string">'dist'</span>),</div><div class="line">        <span class="attr">filename</span>: <span class="string">'bundle.js'</span></div><div class="line">    &#125;,</div><div class="line">    <span class="comment">// 文件后缀</span></div><div class="line">    resolve: &#123;</div><div class="line">        <span class="attr">extensions</span>: [<span class="string">'.ts'</span>, <span class="string">'.js'</span>]</div><div class="line">    &#125;,</div><div class="line">    <span class="attr">module</span>: &#123;</div><div class="line">        <span class="comment">// babel</span></div><div class="line">        rules: [</div><div class="line">            &#123;</div><div class="line">            <span class="attr">test</span>: <span class="regexp">/\.ts$/</span>,</div><div class="line">            <span class="attr">use</span>: [<span class="string">"babel-loader"</span>, <span class="string">"ts-loader"</span>],</div><div class="line">            <span class="attr">exclude</span>: <span class="regexp">/node_modules/</span></div><div class="line">        &#125;,</div><div class="line">        &#123;</div><div class="line">            <span class="attr">test</span>: <span class="regexp">/\.css$/</span>, <span class="comment">// Only .css files</span></div><div class="line">            use: [<span class="string">"style-loader"</span>, <span class="string">"css-loader"</span>]</div><div class="line">        &#125;]</div><div class="line">    &#125;,</div><div class="line">    <span class="attr">plugins</span>: [</div><div class="line">        <span class="comment">// plugins</span></div><div class="line">        <span class="keyword">new</span> HtmlwebpackPlugin(&#123;</div><div class="line">            <span class="attr">template</span>: path.resolve(__dirname, <span class="string">'src/index.html'</span>),</div><div class="line">            <span class="attr">inject</span>: <span class="string">'body'</span></div><div class="line">        &#125;)</div><div class="line">    ],</div><div class="line">    <span class="attr">devtool</span>: <span class="string">'source-map'</span></div><div class="line">&#125;;</div><div class="line"></div><div class="line"><span class="built_in">module</span>.exports = config;</div></pre></td></tr></table></figure>
<p>其中主要涉及的文件生成：</p>
<ul>
<li>bundle.js: 为主要代码的编译打包</li>
</ul>
<p>之前在<a href="https://godbasin.github.io/2017/02/05/angular-free-1-webpack-and-babel-config/">《玩转angular1》系列</a>中讲过一种将依赖单独打包成vendors.js，而将项目代码打包成bundle.js，这样的方式使用场景不一样，大家需要也可以去看看。</p>
<h3 id="webpackServer-config-js"><a href="#webpackServer-config-js" class="headerlink" title="webpackServer.config.js"></a>webpackServer.config.js</h3><figure class="highlight javascript"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div></pre></td><td class="code"><pre><div class="line"><span class="keyword">var</span> webpack = <span class="built_in">require</span>(<span class="string">'webpack'</span>);</div><div class="line"><span class="keyword">var</span> path = <span class="built_in">require</span>(<span class="string">'path'</span>);</div><div class="line"><span class="keyword">var</span> config = <span class="built_in">require</span>(<span class="string">"./webpack.config.js"</span>);</div><div class="line">config.entry.concat([<span class="string">'webpack/hot/dev-server'</span>,</div><div class="line">    <span class="string">'webpack-dev-server/client?http://localhost:3333'</span></div><div class="line">]);</div><div class="line"><span class="built_in">module</span>.exports = config;</div></pre></td></tr></table></figure>
<h2 id="其他配置"><a href="#其他配置" class="headerlink" title="其他配置"></a>其他配置</h2><hr>
<h3 id="babelrc"><a href="#babelrc" class="headerlink" title=".babelrc"></a>.babelrc</h3><p>babel-loader的配置通常使用.babelrc文件进行配置：</p>
<figure class="highlight json"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div></pre></td><td class="code"><pre><div class="line">&#123;</div><div class="line">    <span class="attr">"presets"</span>: [</div><div class="line">        <span class="string">"latest"</span>, &#123;</div><div class="line">            <span class="attr">"ignore"</span>: [<span class="string">"./node_modules"</span>]</div><div class="line">        &#125;</div><div class="line">    ],</div><div class="line">    <span class="attr">"plugins"</span>: []</div><div class="line">&#125;</div></pre></td></tr></table></figure>
<p>至于<code>presets</code>参数，我们直接上最新的特性就好啦。当然小伙伴们也可以根据自己的喜好配置像”es-2015”、”stage-0”等阶段，当然需要安装相应的babel依赖啦。</p>
<p>更多的babel解读可参考阮一峰的<a href="http://www.ruanyifeng.com/blog/2016/01/babel.html" target="_blank" rel="external">《Babel入门教程》</a>。</p>
<h3 id="tsconfig-json"><a href="#tsconfig-json" class="headerlink" title="tsconfig.json"></a>tsconfig.json</h3><p>直接上json：</p>
<figure class="highlight json"><table><tr><td class="gutter"><pre><div class="line">1</div><div class="line">2</div><div class="line">3</div><div class="line">4</div><div class="line">5</div><div class="line">6</div><div class="line">7</div><div class="line">8</div><div class="line">9</div><div class="line">10</div><div class="line">11</div><div class="line">12</div><div class="line">13</div><div class="line">14</div><div class="line">15</div><div class="line">16</div><div class="line">17</div><div class="line">18</div><div class="line">19</div><div class="line">20</div><div class="line">21</div><div class="line">22</div><div class="line">23</div><div class="line">24</div><div class="line">25</div><div class="line">26</div></pre></td><td class="code"><pre><div class="line">&#123;</div><div class="line">    <span class="attr">"compilerOptions"</span>: &#123;</div><div class="line">        <span class="attr">"baseUrl"</span>: <span class="string">"src"</span>,</div><div class="line">        <span class="attr">"target"</span>: <span class="string">"es5"</span>,</div><div class="line">        <span class="attr">"module"</span>: <span class="string">"commonjs"</span>,</div><div class="line">        <span class="attr">"sourceMap"</span>: <span class="literal">true</span>,</div><div class="line">        <span class="attr">"noImplicitAny"</span>: <span class="literal">false</span>,</div><div class="line">        <span class="attr">"noFallthroughCasesInSwitch"</span>: <span class="literal">true</span>,</div><div class="line">        <span class="attr">"noImplicitReturns"</span>: <span class="literal">true</span>,</div><div class="line">        <span class="attr">"importHelpers"</span>: <span class="literal">true</span>,</div><div class="line">        <span class="attr">"noEmitHelpers"</span>: <span class="literal">true</span>,</div><div class="line">        <span class="attr">"pretty"</span>: <span class="literal">true</span>,</div><div class="line">        <span class="attr">"strictNullChecks"</span>: <span class="literal">false</span>,</div><div class="line">        <span class="attr">"experimentalDecorators"</span>: <span class="literal">true</span>,</div><div class="line">        <span class="attr">"lib"</span>: [</div><div class="line">            <span class="string">"dom"</span>,</div><div class="line">            <span class="string">"es7"</span>,</div><div class="line">            <span class="string">"es6"</span></div><div class="line">        ]</div><div class="line">    &#125;,</div><div class="line">    <span class="attr">"exclude"</span>: [</div><div class="line">        <span class="string">"node_modules"</span>,</div><div class="line">        <span class="string">"src/assets"</span>,</div><div class="line">        <span class="string">"dist"</span></div><div class="line">    ]</div><div class="line">&#125;</div></pre></td></tr></table></figure>
<h2 id="启动应用"><a href="#启动应用" class="headerlink" title="启动应用"></a>启动应用</h2><hr>
<h3 id="项目代码"><a href="#项目代码" class="headerlink" title="项目代码"></a>项目代码</h3><p>关于代码其实很简单，从angular-cli里偷过来一个<code>app-root</code>的模块组件，然后拼到项目里，最终长这么一个样：</p>
<p><img src="https://github-imglib-1255459943.cos.ap-chengdu.myqcloud.com/@IA9G2NI16PS9O$ERF%25%28E%29Q.png" alt="image"></p>
<p>打包之后生成的dist目录长这样：</p>
<p><img src="https://github-imglib-1255459943.cos.ap-chengdu.myqcloud.com/3B8D%25PM%7DFA$%25B2G58~%25%28H%5B4.png" alt="image"></p>
<p>其实这里大家可以看到这样使用file-loader的话，对应的文件并不会一起打包进去bundle.js文件里，这样有好处也有不好的地方。</p>
<h2 id="结束语"><a href="#结束语" class="headerlink" title="结束语"></a>结束语</h2><hr>
<p>这节主要讲了webpack/babel/Typescript一些相关配置，项目其实已经搭建起来了，但是目前看来并不是特别完善，后面我们可以做些改善和调整。<br><a href="https://github.com/godbasin/godbasin.github.io/tree/blog-codes/angular2-free/1-init-angular-app-with-webpack" target="_blank" rel="external">此处查看项目代码</a><br><a href="http://angular2-free.godbasin.com/1-init-angular-app-with-webpack/index.html" target="_blank" rel="external">此处查看页面效果</a></p>
  
		
		<p style="margin-top:50px;">
			查看Github有更多内容噢：<a href="https://github.com/godbasin">https://github.com/godbasin</a>
			<br>
			更欢迎来<a href="https://godbasin.github.io/front-end-playground">被删的前端游乐场</a>边撸猫边学前端噢
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	<img src="https://github-imglib-1255459943.cos.ap-chengdu.myqcloud.com/2code2.jpg" width="200" height="200" style="display:block;margin: 0 auto;" />
	<p style="text-align: center;margin-top: 10px;margin-bottom: 20px;">码生艰难，写文不易，给我家猪囤点猫粮了喵~</p>
	<div class="author-right">
  		<p>作者：被删</p>
  		<p>出处：<a href="https://godbasin.github.io">https://godbasin.github.io</a></p>
  		<p>本文版权归作者所有，欢迎转载，但未经作者同意必须保留此段声明，且在文章页面明显位置给出原文连接，否则保留追究法律责任的权利。</p>
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  <strong class="toc-title">文章目录</strong>
  <ol class="toc"><li class="toc-item toc-level-2"><a class="toc-link" href="#基本依赖"><span class="toc-number">1.</span> <span class="toc-text">基本依赖</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#package-json"><span class="toc-number">1.1.</span> <span class="toc-text">package.json</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#webpack配置"><span class="toc-number">2.</span> <span class="toc-text">webpack配置</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#webpack-config-js"><span class="toc-number">2.1.</span> <span class="toc-text">webpack.config.js</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#webpackServer-config-js"><span class="toc-number">2.2.</span> <span class="toc-text">webpackServer.config.js</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#其他配置"><span class="toc-number">3.</span> <span class="toc-text">其他配置</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#babelrc"><span class="toc-number">3.1.</span> <span class="toc-text">.babelrc</span></a></li><li class="toc-item toc-level-3"><a class="toc-link" href="#tsconfig-json"><span class="toc-number">3.2.</span> <span class="toc-text">tsconfig.json</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#启动应用"><span class="toc-number">4.</span> <span class="toc-text">启动应用</span></a><ol class="toc-child"><li class="toc-item toc-level-3"><a class="toc-link" href="#项目代码"><span class="toc-number">4.1.</span> <span class="toc-text">项目代码</span></a></li></ol></li><li class="toc-item toc-level-2"><a class="toc-link" href="#结束语"><span class="toc-number">5.</span> <span class="toc-text">结束语</span></a></li></ol>
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